Using RBL and DCC for Spam Protection

    Date16 Jun 2007
    Posted ByBill Keys
    I run a Postfix-based mail server that services a few hundred users with an average load of a couple of thousand legitimate messages a day -- but thanks to spam, the actual load on the server is much higher. I use Realtime Blackhole Lists (RBL) and Distributed Checksum Clearinghouse (DCC) clients on Postfix and SpamAssassin to reduce the impact of spam.

    RBLs are lists of IP addresses of known and potential spam originators. There are many RBL providers, such as Spamhaus, Spamcop, and DNSRBL. These lists are also known by various other names, such as blacklists or blocking lists. Mail servers can connect to RBL servers to check on IP addresses.

    You are not authorised to post comments.

    LinuxSecurity Poll

    What is your favorite feature?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 3 answer(s).
    [{"id":"65","title":"Feature articles","votes":"0","type":"x","order":"1","pct":0,"resources":[]},{"id":"66","title":"News","votes":"1","type":"x","order":"2","pct":100,"resources":[]},{"id":"67","title":"HOWTOs","votes":"0","type":"x","order":"3","pct":0,"resources":[]}]["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"]["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"]350


    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.